JPH08140105A - Solid-state color imaging device - Google Patents

Abstract

PURPOSE: To simplify signal processing to a video signal outputted from the solid-state color imaging device. CONSTITUTION: A color filter mounted on the solid-state color imaging device is composed of 1st-4th elements E1-E4. A color component expressed by mutually adding the 1st and 2nd elements E1 and E2 arranged at odd-number rows is made equal with a color component expressed by mutually adding the 3rd and 4th elements E3 and E4 arranged at even-number columns. One color component of three primary colors is respectively expressed by the difference between the 1st and 2nd elements E1 and E2 and the difference between the 3rd and 4th elements E3 and E4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color solid-state image pickup device having a mosaic color filter, and more particularly,
Regarding the configuration of the color filter.

[0002]

2. Description of the Related Art When a solid-state image sensor is used to obtain a color image, a mosaic or stripe color filter is mounted on the light-receiving surface of the solid-state image sensor, and a plurality of light-receiving pixels arranged on the light-receiving surface are respectively provided. It is associated with a specific color component. The mosaic color filter has a more complicated filter structure than the stripe color filter, but has an advantage that the horizontal resolution can be increased. For this reason, in a video camera or the like in which high resolution is desired, a solid-state image pickup device equipped with a mosaic color filter is often adopted.

FIG. 8 is a plan view of a light receiving portion of a frame transfer type CCD solid-state image pickup device in which a mosaic color filter is mounted, and FIG. 9 is a sectional view taken along line XX. In the surface region of the P-type silicon substrate 1, a plurality of isolation regions 2 made of a high-concentration P-type region or a selectively oxidized thick oxide film are formed in parallel with each other. N-type impurities are diffused in the substrate region sandwiched between the isolation regions 2 to form a channel region 3 which serves as a transfer path for information charges. On the silicon substrate 1 on which the isolation region 2 and the channel region 3 are formed, a plurality of first-layer transfer electrodes 5 are arranged so as to intersect with the channel region 3 with an oxide film 4 serving as a gate insulating film interposed therebetween. It Furthermore, the transfer electrode 6 of the second layer is arranged so as to cover the gap of the transfer electrode 5 of the first layer and in a state of being insulated from the transfer electrode 5 of the first layer. The potential of the transfer electrode 5 of the first layer is set high and the potential of the transfer electrode 6 of the second layer is set low during the period in which the information charges generated by photoelectric conversion of the light emitted from the subject are accumulated. As a result, a potential well is formed in the channel region 3 below the transfer electrode 5 of the first layer, and a potential barrier is formed in the channel region 3 below the transfer electrode 6 of the second layer, which is continuous in the vertical direction. The channel region 3 is divided into a plurality of light receiving pixels. Further, for example, four-phase clock pulses are given to the transfer electrodes 5 and 6, and the information charges accumulated in the potential well are sequentially transferred to the output side along the channel region 3.

The color filter 7 formed so as to cover the transfer electrodes 5 and 6 is divided into a plurality of regions corresponding to the light receiving pixels defined by the potential barrier formed by the separation region 2 and the transfer electrode 6. . Then, in each divided area, Ye (yellow), Cy (cyan) so that each component of R (red), G (green) and B (blue) can be reproduced by arithmetic processing of the image information obtained from each column. , W
Each component of (white) and G (green) is assigned according to a predetermined rule. Actually, Ye filter and C
Since the G filter can be configured by superimposing it with the y filter, the first colored layer 8 serving as the Ye filter is arranged in the divided region to which the Ye component and the G component are allocated, and the second colored layer serving as the Cy filter is arranged. The color filter 7 can be configured by arranging 9 in the divided areas to which the Cy component and the G component are assigned. At this time, the colored layers 8 and 9 are not arranged in the divided areas to which the W component is assigned, and the light from the subject is directly irradiated to the light receiving pixels.

In the case of the above solid-state image pickup device, the information charges accumulated in each light receiving pixel cannot be transferred in an independent state, so that the information charges of two rows are mixed and transferred in units of two pixels. ing. Then, the interlaced driving is enabled by inverting the combination of the light receiving pixels for mixing the information charges for each field, and the image information corresponding to the number of pixels in the vertical direction is obtained.

When the information charges are mixed in this manner, Ye + W and Cy + G components can be obtained from the light receiving pixels in the nth row and the n + 1th row, for example, in the odd field, and from the difference between these components, The R component is generated as shown in Equation 1. (Ye + W)-(Cy + G) = (2R + 2G + B)-(2G + B) = 2R (1) (Ye = R + G and Cy = G + B.) Then, in the same field, the next n + 2th line and n + 3. The components of Cy + W and Ye + G can be obtained from the light receiving pixels in the row, and the B component is generated from the difference between these components as shown in Expression 2.

(Cy + W) − (Ye + G) = (R + 2G + 2B) − (2G + R) = 2B (2) Further, if the components of Ye + W and Cy + G or Cy + W and Ye + G obtained from each light receiving pixel are combined with each other, the formula is obtained. As shown in 3, each component of R, G and B is 1:
A luminance signal combined at a ratio of 2: 1 is generated.

Ye + Cy + G + W = 2R + 4G + 2B (3) Originally, the luminance signal is R, according to the standard of the NTSC system.
It is produced by synthesizing each component of G and B at a ratio of 30%, 59% and 11%, but if it is produced by synthesizing at a ratio close to this, there is a practical problem. Absent.
Regarding the generation of these B component, R component and luminance signal,
The same arithmetic processing is performed for odd fields. That is, the R component is generated from the components of W + Ye and G + Cy obtained from the light receiving pixels in the n−1th row and the nth row,
W + obtained from the light receiving pixels on the n + 1th and n + 2th rows
The B component is generated from the Cy and G + Ye components.

Therefore, in each field during interlaced driving, it is possible to obtain R, G, and B color component signals and luminance signals from the light receiving pixels for four rows.

[0010]

By the way, a full-frame CCD solid-state image pickup device has been considered in which the information charges of all the light receiving pixels are independently read out without mixing the information charges of two pixels. This full frame type CC
In the case of a D solid-state image sensor, for example, from the light receiving pixels in even rows to R
To obtain the component, it is necessary to obtain the B component from the light receiving pixels in the odd rows and the common luminance signal from each row. As shown in FIG. 8, in the solid-state image sensor in which one light receiving pixel is associated with one color component, the B component or the R component cannot be generated from the image information of the light receiving pixels for one row. Although it is possible to obtain the R component and the B component by changing the arrangement of each component of the color filter 7, it is difficult to obtain a common luminance signal from each row, which makes practical application difficult. .

Therefore, the present invention is a full-frame type CCD.
An object of the present invention is to enable a solid-state imaging device to generate a predetermined color component signal and a luminance signal from a video signal for each row.

[0012]

The present invention has been made in order to solve the above-mentioned problems, and a first feature is that a semiconductor substrate and a surface region of this semiconductor substrate are arranged in a matrix form. A plurality of light-receiving pixels arranged and a color filter arranged to cover each light-receiving pixel by associating each light-receiving pixel with each element in a one-to-one correspondence. An element having a first color component and an element having a second color component are alternately arranged, and an element having a third color component and an element having a fourth color component are alternately arranged in an even column. The sum of the first color component and the second color component matches the sum of the third color component and the fourth color component, and the first color component and the first color component The first basic color component is obtained from the difference with the second color component. Together are is to the basic color components different from the second and third color components and the fourth color component is obtained.

A second feature is that in the color filter, an element having a cyan color component and a yellow component and an element having a green component and a yellow component are alternately arranged in an odd number column and an even number column is arranged. An element having a green color component and a cyan color component and an element having a yellow color component and a cyan color component are alternately arranged.

[0014]

According to the first feature of the present invention, the sum of the first color component and the second color component matches the sum of the third color component and the fourth color component. , The added value of the video signal for each row represents the same component, and it is possible to obtain the luminance signal by adding the information of two adjacent pixels for each row. Furthermore, the first basic color component is obtained from the difference between the first color component and the second color component, and the second basic color component is obtained from the difference between the third color component and the fourth color component. By doing so, it is possible to obtain two types of different basic color components for the video signals of the odd rows and the video signals of the odd rows.

According to the second aspect of the present invention, the elements having the cyan component and the yellow component and the elements having the green component and the yellow component are arranged in the odd-numbered columns,
A luminance signal including red, green and blue components can be obtained from the sum of the signals of the pixels corresponding to both elements, and a blue component can be obtained from the difference between the signals. Then, by arranging an element having a green color component and a cyan color component and an element having a yellow color component and a cyan color component in the even-numbered column, red from the sum of the signals of the pixels corresponding to both elements,
A luminance signal including green and blue components can be obtained, and a red component can be obtained from the difference between the signals.

[0016]

FIG. 1 is a plan view showing the structure of a color filter used in a color solid-state image pickup device of the present invention, showing elements corresponding to a plurality of light receiving pixels arranged in a matrix. The color filter is composed of first to fourth elements E1 to E4, the first and second elements E1 and E2 are alternately arranged in the odd-numbered columns, and the third and fourth elements are arranged in the even-numbered columns. The elements E3 and E4 are arranged alternately. The first to fourth elements E1 to E4 are of three primary colors (red: R, green: G, blue: B) and their complementary colors (yellow: Ye, magenta: Mg, cyan: C).
It is formed by combining two or three components of y) at a predetermined ratio. Then, the ratio of the combination is determined so as to comply with Expression 4.

E1 + E2 = E3 + E4 | E1-E2 | = C1 | E3-E4 | = C2 (4) (C1 and C2 represent one component of the three primary colors or the difference between two components.) That is, an odd number First and second elements E arranged in rows
The color components represented by the signals obtained by adding the signals obtained from the light receiving pixels corresponding to 1 and E2 to each other are the signals obtained from the light receiving pixels corresponding to the third and fourth elements E3 and E4 arranged in even columns. To be equal to the color components represented by the signals added together. Furthermore, the difference between the signals obtained from the light receiving pixels corresponding to the first and second elements E1 and E2, and the difference between the signals obtained from the light receiving pixels corresponding to the third and fourth elements E3 and E4. By the difference, one color component of each of the three primary colors can be obtained.

Here, if E1 + E2 and E3 + E4 contain R, G, and B components in a predetermined ratio, respectively, it becomes possible to represent a luminance signal by E1 + E2 and E3 + E4. Such first to fourth
In the case of a solid-state image sensor in which a color filter including the elements E1 to E4 is mounted, a luminance signal and a basic color component are obtained by performing addition processing and subtraction processing on a video signal obtained from one row of light receiving pixels. be able to. Therefore, the process of processing the video signal necessary for reproducing the color video is simplified, and the signal processing circuit can be simplified.

Incidentally, such color filters are
It suffices that the fourth elements E1 to E4 are associated with the light-receiving pixels in a one-to-one correspondence, and can be applied to any of the frame transfer type, interline type, and frame interline type solid-state imaging devices. Figure 2
Are the first to fourth elements E1 to E of the color filter
FIG. 4 is a plan view showing an example of an arrangement of color components when No. 4 is composed of Ye, Cy, and G.

The first element E1 has Cy and Ye arranged at a ratio of 2: 1 and the second element E2 has G and Ye arranged at a ratio of 2: 1. In the third element E3, G and Cy are arranged at a ratio of 2: 1,
In the fourth element E4, Ye and Cy are arranged at a ratio of 2: 1. Therefore, the first to fourth elements E1 to E
4 is represented by Equation 5.

E1 = 2Cy + Ye E2 = 2G + Ye E3 = 2G + Cy E4 = 2Ye + Cy (5) Therefore, the signal obtained from the light receiving pixel corresponding to the first element E1 in the odd row and the light receiving corresponding to the second element E2. Combining with the signal obtained from the pixel, Equation 6 is obtained.

E1 + E2 = (2Cy + Ye) + (2G + Ye) = 2R + 6G + 2B (6) Similarly, the signal obtained from the light-receiving pixel corresponding to the third element E3 in the even-numbered row and the light-receiving corresponding to the fourth element E4 Combining with the signal obtained from the pixel, Equation 7 is obtained.

E3 + E4 = (2G + Cy) + (2Ye + Cy) = 2R + 6G + 2B (7) These formulas 6 and 7 are obtained by synthesizing each component of R, G and B at a ratio of 1: 3: 1. And represents a luminance signal. Note that this luminance signal does not match the original luminance signal, but since each component is combined at a rate close to the rate according to the standard, there is no practical problem.

Further, when the difference between the signal obtained from the light receiving pixel corresponding to the first element E1 and the signal obtained from the light receiving pixel corresponding to the second element E2 is taken, the B component is expressed as shown in Expression 8. Obtainable. | E1-E2 | = (2Cy + Ye)-(2G + Ye) = 2Cy-2G = 2B (8) Similarly, the signal obtained from the light receiving pixel corresponding to the third element E3 and the fourth element E4 are By taking the difference from the signal obtained from the corresponding light receiving pixel, the R component can be obtained as shown in Expression 9.

| E3-E4 | = (2Ye + Cy)-(2G + Cy) = 2Ye-2G = 2R (9) As described above, the first to fourth elements E1 to E4 are as shown in FIG. Then, each element may be divided into 2: 1 and each divided area may correspond to Cy, Ye and G. Further, the first to fourth elements E1 to E4 themselves may be formed so as to exhibit the spectral characteristics that satisfy the expression 5.

FIG. 3 is a plan view showing an example of the arrangement of the respective color components when the first to fourth elements E1 to E4 of the color filter are composed of R, G and B. The first element E1 has R, G and B arranged at a ratio of 1: 3: 2, and the second element E2 has R and G arranged at a ratio of 1: 3. The third element E3 is G and B.
Are arranged in a ratio of 3: 1, and the fourth element E4 is arranged in a ratio of R: G and B in a ratio of 2: 3: 1. Therefore, the first to fourth elements E1 to E4 are represented by Expression 10.

E1 = R + 3G + 2B E2 = R + 3G E3 = 3G + B E4 = 2R + 3G + B (10) Then, the signal obtained from the light receiving pixel corresponding to the first element E1 in the odd row and the light receiving corresponding to the second element E2 When the signal obtained from the pixel is combined, Equation 11 is obtained.

E1 + E2 = (R + 3G + 2B) + (R + 3G) = 2R + 6G + 2B (11) Similarly, the signal obtained from the light receiving pixel corresponding to the third element E3 in the even row and the light receiving corresponding to the fourth element E4. Combining with the signal obtained from the pixel, Equation 12 is obtained.

E3 + E4 = (3G + B) + (2R + 3G + B) = 2R + 6G + 2B (12) In the formulas 11 and 12, the respective components of R, G and B were synthesized in a ratio of 1: 3: 1. And represents the luminance signal as in the case of Expression 7. In addition, the signal obtained from the light receiving pixel corresponding to the first element E1 and the second
By taking the difference from the signal obtained from the light receiving pixel corresponding to the element E2 of B, the B component can be obtained as shown in Expression 13.

| E1-E2 | = (R + 3G + 2B)-(R + 3G) = 2B (13) Similarly, the signal obtained from the light receiving pixel corresponding to the third element E3 and the fourth element E4 are handled. By taking the difference from the signal obtained from the light receiving pixel, the R component can be obtained as shown in Expression 14.

| E3−E4 | = (2R + 3G + B) − (3G + B) = 2R (14) As described above, regarding the first to fourth elements E1 to E4, as shown in FIG. Is divided into 1: 2: 3 or 1: 3, and the respective divided areas may correspond to R, G and B. Further, the first to fourth elements E1 to E4 themselves may be formed so as to exhibit the spectral characteristics that satisfy the expression 10.

FIG. 4 is a plan view showing another example of the arrangement of each color component when the first to fourth elements E1 to E4 of the color filter are composed of Ye, Cy and G. The first element E1 has Cy and G arranged at a ratio of 2: 1, and the second element E2 has Ye and G arranged at a ratio of 2: 1. The third element E3 has Ye and Cy arranged at a ratio of 2: 1, and the fourth element E3
In No. 4, G and Cy are arranged at a ratio of 2: 1. Therefore,
The first to fourth elements E1 to E4 are represented by Expression 15.

E1 = 2Cy + G E2 = 2Ye + G E3 = 2Ye + Cy E4 = 2G + Cy (15) Therefore, the signal obtained from the light receiving pixel corresponding to the first element E1 in the odd row and the light receiving corresponding to the second element E2. Combining with the signal obtained from the pixel, Equation 16 is obtained.

E1 + E2 = (2Cy + G) + (2Ye + G) = 2R + 6G + 2B (16) Similarly, the signal obtained from the light receiving pixel corresponding to the third element E3 in the even-numbered row and the light receiving corresponding to the fourth element E4 When the signal obtained from the pixel is combined, Equation 17 is obtained.

E3 + E4 = (2Ye + Cy) + (2G + Cy) = 2R + 6G + 2B (17) These equations 16 and 17 are obtained by synthesizing each component of R, G and B at a ratio of 1: 3: 1. And represents the luminance signal as in the case of Expression 7. In addition, the signal obtained from the light receiving pixel corresponding to the first element E1 and the second
By taking the difference from the signal obtained from the light receiving pixel corresponding to the element E2 of, the difference between the B component and the R component can be obtained as shown in Expression 18.

| E1-E2 | = (2Cy + G)-(2Ye + G) = 2Cy-2Ye = 2B-2R (18) Similarly, the signal obtained from the light receiving pixel corresponding to the third element E3 and the By taking the difference from the signal obtained from the light receiving pixel corresponding to the element E4 of No. 4, the R component can be obtained as shown in Expression 19.

| E3−E4 | = (2Ye + Cy) − (2G + Cy) = 2Ye−2G = 2R (19) Then, the difference between the B component and the R component shown in Expression 18 is given by Expression 1
The B component can be obtained by adding the R components shown in FIG.

In this way, the first to fourth elements E1
For E4 to E4, as shown in FIG. 4, each element may be divided into 2: 1 and each divided area may correspond to Cy, Ye, and G. Further, the first to fourth elements E1 to E4 themselves may be formed so as to exhibit a spectral characteristic that satisfies Expression 15. FIG. 5 shows the first color filter.
[FIG. 11] A plan view showing another example of the arrangement of the respective color components when the fourth elements E1 to E4 are composed of R, G, and B.

The first element E1 has G and B of 3: 2.
The second elements E2 are arranged in a ratio of R and G of 2: 3. The third element E3 has R, G, and B arranged at a ratio of 2: 3: 1, and the fourth element E4 has G and B arranged at a ratio of 3: 1. Therefore, the first to fourth elements E1 to E4 are
It is represented by Equation 20.

E1 = 3G + 2B E2 = 2R + 3G E3 = 2R + 3G + B E4 = 3G + B (20) Then, the signal obtained from the light receiving pixel corresponding to the first element E1 in the odd row and the light receiving corresponding to the second element E2 When the signal obtained from the pixel is combined, Equation 21 is obtained.

E1 + E2 = (3G + 2B) + (2R + 3G) = 2R + 6G + 2B (21) Similarly, the signal obtained from the light-receiving pixel corresponding to the third element E3 in the even-numbered row and the light-receiving corresponding to the fourth element E4 Combining with the signal obtained from the pixel, Equation 22 is obtained.

E3 + E4 = (2R + 3G + B) + (3G + B) = 2R + 6G + 2B (22) In these equations 21 and 22, each component of R, G and B was synthesized in a ratio of 1: 3: 1. And represents the luminance signal as in the case of Expression 7. In addition, the signal obtained from the light receiving pixel corresponding to the first element E1 and the second
By taking the difference from the signal obtained from the light receiving pixel corresponding to the element E2, the difference between the B component and the R component can be obtained as shown in Expression 23.

| E1-E2 | = (3G + 2B)-(2R + 3G) = 2B-2R (23) Similarly, the signal obtained from the light receiving pixel corresponding to the third element E3 and the fourth element E4. When the difference from the signal obtained from the light receiving pixel corresponding to is taken, the R component can be obtained as shown in Expression 24.

| E3-E4 | = (2R + 3G + B)-(3G + B) = 2R (24) Then, the difference between the B component and the R component shown in Expression 23 is given by Expression 2
The B component can be obtained by adding the R components shown in FIG. Thus, the first to fourth elements E1 to E4
For each element, as shown in FIG.
It may be divided into 3, 1: 3, or 1: 2: 3, and each divided region may correspond to R, G, and B. Also, first to
The fourth elements E1 to E4 themselves may be formed so as to exhibit a spectral characteristic that satisfies Expression 20.

FIG. 6 shows the first to fourth elements E1 to E.
4 is a plan view of a light receiving portion of a frame transfer type CCD solid-state image sensor in which a color filter having No. 4, which is composed of Ye, Cy, and G, is mounted. FIG. In this figure, a four-phase drive full-frame CCD solid-state imaging device in which four transfer electrodes are arranged per pixel is shown.

A plurality of isolation regions 12 made of high-concentration P-type regions are formed in parallel with each other on the surface region of the P-type silicon substrate 11, and N-type impurities are added to the substrate regions sandwiched by the isolation regions 12. Are diffused to form the channel region 13. The isolation region 12 and the channel region 13 are the same as those of the solid-state image sensor shown in FIG. Silicon substrate 1 in which isolation region 12 and channel region 13 are formed
1, a plurality of first-layer transfer electrodes 15 and second-layer transfer electrodes 16 are arranged in parallel with each other so as to intersect with the channel region 13 via the oxide film 14. Further, during the period of accumulating the information charges generated by photoelectric conversion, for example,
The even-numbered potentials of the second-layer transfer electrodes 16 are lowered to form potential barriers, and the first-layer transfer electrodes 15 and 2 are formed.
The odd-numbered potential of the transfer electrode 16 of the layer is increased to form a potential well. As a result, the channel region 13 continuous in the vertical direction is electrically separated by the even-numbered transfer electrodes 16 of the second layer, and a plurality of light receiving pixels are formed.
Then, for example, four-phase clock pulses are applied to the transfer electrodes 15 and 16, and the information charges accumulated in the potential well are sequentially transferred to the output side along the channel region 13. Here, two transfer electrodes 15 and 16 are arranged per pixel (four in total), and information charges accumulated in each light receiving pixel are transferred independently for each pixel. .

The color filter 17 formed so as to cover the transfer electrodes 15 and 16 is divided into a plurality of regions corresponding to each row of the light receiving pixels, and further, three regions corresponding to every two columns of the channel region 13. Is divided into A divided area extending over two light receiving pixels adjacent to each other across the separation area 12 corresponds to ⅓ of each light receiving pixel, and divided areas adjacent to both sides thereof correspond to ⅔ of each light receiving pixel. The Ye, Cy, and G components are assigned to these divided areas in a predetermined order. The order of assigning the color components to the respective divided areas is the same in each row, but is shifted by one area in the row direction between the even rows and the odd rows. As a result, the first element E1 in which Cy and Ye are arranged in a ratio of 2: 1,
The second element E2 in which G and Ye are arranged at a ratio of 2: 1 is formed in an odd row. Similarly, a third element E3 in which G and Cy are arranged in a ratio of 2: 1,
A fourth element E4 in which Ye and Cy are arranged at a ratio of 2: 1 is formed in even rows.

By the way, the G component filter can be constructed by superposing the Ye component filter and the Cy component filter. Therefore, the first colored layer 18 serving as the Ye filter is arranged in the divided region to which the Ye component and the G component are allocated, and the second colored layer 19 serving as the Cy filter is arranged as Cy.
The color filter 17 is configured by arranging the components and the G component in divided areas. As a result, the divided area in which only the first colored layer 18 is arranged is associated with the Ye component, and the divided area in which only the second colored layer 19 is arranged is associated with the Cy component, respectively. The divided area in which the second colored layer 19 is arranged so as to overlap is associated with the G component.

In the above embodiment, the case where the Ye filter and the Cy filter are overlapped to obtain the G component has been described, but two kinds of filters corresponding to the first and second color components are overlapped to form the third component. In the case of obtaining the color component of, it is possible to use a combination of other filters. Such a color filter 17 has a width in the row direction of 2 without changing the width in the column direction of each divided area of the color filter.
It can be formed by setting / 3.

[0050]

According to the present invention, since the luminance signal and the predetermined basic color component signal can be obtained for each video signal obtained from one row of light receiving pixels, the video signal output from the solid-state image pickup device can be obtained. Signal processing becomes simple. Therefore, it is possible to simplify the configuration of the signal processing circuit that performs a predetermined process on the video signal, and it is possible to reduce the cost while reproducing the color video.

[Brief description of drawings]

FIG. 1 is a plan view showing a configuration of a color filter of a color solid-state image pickup device of the present invention.

FIG. 2 is a plan view showing a first example of a specific configuration of the color filter of FIG.

FIG. 3 is a plan view showing a second example of a specific configuration of the color filter of FIG.

FIG. 4 is a plan view showing a third example of a specific configuration of the color filter shown in FIG.

5 is a plan view showing a fourth example of a specific configuration of the color filter of FIG.

FIG. 6 is a plan view showing a light receiving portion of the solid-state image sensor of the present invention.

7 is a cross-sectional view taken along the line YY of FIG.

FIG. 8 is a plan view showing a light receiving portion of a conventional solid-state image sensor.

9 is a cross-sectional view taken along the line XX of FIG.

[Explanation of symbols]

 1, 11 Silicon substrate 2, 12 Separation region 3, 13 Channel region 4, 14 Oxide film 5, 15 1st layer transfer electrode 6, 16 2nd layer transfer electrode 7, 17 Color filter 8, 18 1st layer Colored layer 9, 19 Second colored layer

Claims (4)

[Claims] 1. A semiconductor substrate, a plurality of light receiving pixels arranged in a matrix on a surface region of the semiconductor substrate, and each light receiving pixel is associated with each element in a one-to-one correspondence so as to cover each light receiving pixel. A color filter that is arranged, and the color filter is configured such that an element having a first color component and an element having a second color component are alternately arranged in an odd number column and a third color component is arranged in an even number column. And an element having a fourth color component are alternately arranged, and the sum of the first color component and the second color component is the third color component and the fourth color component. Of the third color component and the fourth color component while obtaining the first basic color component from the difference between the first color component and the second color component. Characteristic that the second basic color component is obtained from the difference with the component Color solid-state image sensor. 2. The color solid-state image pickup device according to claim 1, wherein the first to fourth color components include two to three components of three primary colors and their complementary colors. 3. A semiconductor substrate, a plurality of light-receiving pixels arranged in a matrix on the surface region of the semiconductor substrate, and one-to-one correspondence between each light-receiving pixel and each element so as to cover each light-receiving pixel. And an element having a cyan component and a yellow component and an element having a green component and a yellow component are alternately arranged in an odd number column, and the green filter and the cyan component are arranged in an even number column. A color solid-state imaging device, characterized in that elements having a color component and elements having a yellow component and a cyan component are arranged alternately. 4. The color solid-state imaging device according to claim 3, wherein the yellow component is a combination of a green component and a red component, and the cyan component is a combination of a green component and a blue component.